Add metric utility function `withTimer`

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#6,182 opened on Dec 12, 2023 0 comments 0 reactions 0 assignees View on GitHub

prio-low scope-metrics

Description

would it make sense to have a metric utility function `withTimer` which just does the instrumentation? could refactor in a separate PR

_Originally posted by @nflaig in https://github.com/ChainSafe/lodestar/pull/6143#discussion_r1424275675_

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